Pdf 935kb idf heat recovery system pdf 328kb technical specifications. Indirect fired heaters general indirect bath heaters have a wide variety of successful applications in the oil and gas production, processing and transmission industry. Diesel model features 2 stage burner with lowfire setting for fuel savings. This makes these heaters ideal for use in more enclosed, less wellventilated areas, such as enclosed workshops, halls and marquees, where unclean air could affect the occupants of the area. Indirect fired diesel space heaters provide large volumes of clean, fumefree warm air.
Our heating product line contains a wide variety of commercial portable direct and indirect fired heaters that range from 85,000 btuhr to 1,500,000 btuhr. Combined with standard recirculation, fully insulated jacket. Hi400hd portable indirect fired air heaters produce clean, dry, healthy heat offering. When an indirectfired heater connected to a flue pipe is used in a closed room. Some of the most common application include the following. Indirect fired idf series frost fighter offers more features than our competition. Indirect fired heaters are just like your home oil or gas burning furnace with a chimney. Hvf210 heat wagon portable and construction heaters. Diesel indirectfired portable heaters use an embedded burner with combus tion air obtained from the main ventilation fan. With propane or natural gas heating units, the flame is contained in a burn chamber which heats a heat exchanger. Indirect fired heaters also have lower turndown ratios than direct fired heaters, resulting in less ability to vary the heat output, unless additional heat exchangers are added to improve turndown. The cooler air passes over and around the heat exchanger, thus heating the air. Overheating thermostat safety device turns off unit and requires a manual reset.
Having a thorough understanding of all of the differences between these two heater types will. Diesel indirectfired portable heaters with embedded burner with combustion. Indirect fired makeup air units separate the products of combustion from the supply air stream. Temperature control of an indirect fired heater is not as precise as a direct fired heater as it often under or overshoots the desired temperature by a few degrees.
Ul 733 oil fired air heaters issue date october 1, 2015 2003325 flagro industries limited st. What is the difference between direct and indirect fired. Helios 400c helios 500c helios 750c indirect fired air. Indirect fired diesel heaters we can help you with indirect heater hire packages in three capacities 70kw, 100kw and 200kw on a same or next day basis. Indirect fired heaters fvnp400 fvo400 dependable heat wherever you need it 170 f 180 f outlet temperature rise includes proven riello burner technology optional remote thermostat available etl approved for use in the united states and canada fvo200 has a stackable frame for easy storage fvo400 fvn400 fvp400 model oil natural gas propane. However, there are some cases where an indirect fired heater is the better choice. Flagro usa is a quality manufacturer of portable heaters, portable air conditioners, commercial bbq grills, propane torches, and air movers. Indirect fired heaters fvo200 fvn200 fvp200 model oil natural gas propane heat capacity 200,000 btuh 200,000 btuh 200,000 btuh fuel tank capacity 23 us gallons external na external na operating time 15 hours 190 cfh 9. Direct fired heaters are both more efficient and less expensive than indirect fired heaters. Indirect fired diesel space heaters national heater shops.
Pdf 445kb idf feature sheet french pdf 935kb idf heat recovery system pdf 328kb. Prices line of awi units utilize 3 and 4pass drum and tube style heat exchangers figure 2, on following page. Specification idf350 oil diesel idf350 lpng idf500 oil diesel idf500 lpng idf500 hs oil diesel idf500 hs lpng heating capacity 350,000 btuh 350,000 btuh 420,000 btuh 420,000 btu. Heating of highpressure natural gas upstream pressure regulation in order to prevent external icing formation. A heat exchanger is used to transfer the heat from the combustion process. Fully insulated jacket, industrial grade beckett burner oildiesel, stainless steel heat exchanger, satin coated steel, powder coated paint.